Metal baffle for window sash



June 7, 1960 M. W. HILGENDORF METAL BAFFLE FOR WINDOW SASH Filed Dec. 6, 1954 Martin M. Hi/gendorf INVENTOR.

United States Patent i) METAL BAFFLE "FOR WINDOW SASH Martin W. Hilgendorf, Stevens 'Poin't, Wis assignor to Vetter Manufacturing Co., Stevens Point, Wis., a corporation of Wisconsin Filed Dec. -6, 1954, Set. :No. 473,083 "3 Claims. (CL 20- 3 23) This invention relates generally to window construction and more particularly to a novel "baflie-for use as weather stripping in a removable window construction.

The primary object of the present invention resides in the provisionof means for preventing the infiltration of air through the pocket behind the floating channelsin a removable window construction.

A further object 'of the invention resides in thefl provision of 'a bafiie for insuring smoother operation of removable windows by preventing the ,parts of adjacent floating channels from climbing 'or sticking after being depressed in the operation of'r'emoving 'a sash.

The construction of this "invention features "a "baifle which is resiliently engageable within the saw kerf or groove in the jamb of a window. The hook portion of the strip properly holds the strip in position so that a wing portion thereof can extend between adjacent floating channels. The strip is held in alignment by the locking action of the hook portion and by the central portion of the strip which lies flush with the jamb.

Further objects and features of this invention reside in the provision of a baflle for use in conjunction with removable windows that is simple in construction, highly efiicient in operation, and inexpensive to produce thereby permitting wide distribution and utilization.

These, together with the various ancillary objects and features of the invention which will become apparent as the following description proceeds, are attained by this bafile for use in removable window construction, a preferred embodiment of which has been illustrated in the accompanying drawings, by way of example only, wherein:

Figure 1 is an elevational view of a removable window construction employing a baffle with parts of the window jamb and molding being broken away to show parts in section for greater clarity;

Figure 2 is an enlarged horizontal sectional detail view as taken along the plane of line 2-2 in Figure 1;

Figure 3 is an enlarged sectional detail view illustrating the manner in which the hook portion of the baflle is engaged in the saw kerf or groove in the jamb of the window; and

Figure 4 is a perspective view of the elongated strip which forms the bafiie for the floating channels.

With continuing reference to the accompanying drawings wherein like reference numerals designate similar parts throughout the various views, reference numeral generally designates a removable window construction which includes upper and lower sash 12 and 14 mounted on pairs of floating channels 16 and 18' secured by fasteners as at 20 and 22 to the jamb 24.

As can be seen best in Figure 2, springs 26 and 28 concentrically disposed about the fasteners 20 and 22 yieldingly engage the floating channels 16 and 18 and the jamb 24 to urge the floating channels 16 and 18 outwardly into engagement with the sash 12 and 14. The floating channels 16 and 18 are of course provided with 2,939,187 Patented June 7, 1960 2 projecting portions 30and 32 which seat within grooves '34 and36 inthe sash.

Even through suitable moldings as at 38, '40, 42 and 44 are positioned about the window opening, air may readily pass through the space 46 between the floa'ting channels *16 and 18 and the jamb 24.

In order to prevent the passage of air from'outside the building in which the window 19 is utilized "to the inside thereof, the metallic baflie formed of the strip -generally designa'ted by reference numeral 50 is utilized.

As can be seen best in Figure 3, the strip 50 includes a central portion 52 adapted to lie flush with the inner :surface of the 'jamb 24. Thestr-ip 50'has a 'hook'p'or- 'tion '54 receivable in a saw kerf or groove -56 fo'rii1ed in the :jamb :24 "with the hook portion resiliently "en- :g'agi'ng and lockingly holding the strip 50 in alignment 'with the central portion 52 'held flush with'the jamb 24. It'is to'be'noted that'the hook portion 54 digs into the wooden jamb "24 and no further fasteners are necessary to hold the strip '50 in position. v

At the other edge of the central portion 52 there is provided a wing '58 Whichexte'nds between the'floatin'g channels 16 and 18 and has an edge portion "60' bent back upon itself to both rigidity the strip 50 and to fill the space between the floating channels 16 and 18 while providing a bearing surface for 'the "side faces of the floating channels 15 and 18 thereby assuring during the operation of removal of one of the sashes 12 and 14, the floating channels 16 and 18 will not bind or climb upon each other to thereby prevent proper operation of the sash or to permit ingress of air from the outside to the inside of the building in which the window construction it) is utilized to insure against loss of heat.

It is believed that it can be readily seen that the strip 50 will serve to provide a bafile against the ingress of air from the outside of a building through the window 10 between the floating channels 16 and 18 and the jamb 24 by blocking this passage completely. Further, the strip 50 serves to insure proper operation of the window sash 12 and 1 4.

From the foregoing, the construction and operation of the device will be readily understood and further explanation is believed to be unnecessary. However, since numerous modifications and changes will readily occur to those skilled in the art, it is not desired to limit the invention to the exact construction shown and described, and accordingly all suitable modifications and equivalents may be resorted to, falling within the scope of the appended claims.

What is claimed as new is as follows:

1. A window construction including a baflle for use as a weather strip for removable windows, said window construction comprising floating sash channels, fasteners secured to a window jamb, said sash channels being movably mounted on said fasteners, springs centrally disposed on said fasteners yieldingly engaging said window jamb and said sash channels resiliently urging said sash channels away from said jamb, an elongated strip having a central portion lying flush with said window jamb, said jamb having a groove therein forming a pair of parallel inner faces on opposite sides of said groove, said strip having a wedge portion received in said groove, said strip having a wing extending between said floating sash channels, said wedge portion being resiliently engaged in said groove and lockingly engaging both of said pair of faces formed in said jamb to hold said strip in position, said wedge portion terminating in a free edge bitingly engaging one of said faces, said wing having an edge portion bent back upon itself to hold said floating channels apart and in position while rigidifying said strip,

said floating channels being spaced apart a distance equal to the thickness of said edge portion.

a 2. A double hung, vertically slidable window sash structure comprising a window frame including a side {frame member, inner and outer sash guides extending'substantially the full length of said side frame 'member and mounted for yielding transverse movement relative thereto,;said sash guides having adjacent side. edge portions disposed in proximate face-to-face relation, and a unitary bafiie strip disposed between said side frame mem- .,ber and said sash guides, said baffle strip comprising an elongated, thin strip of spring material having an intermediate seating web, a pair of leg flanges extending in opposite direct-ions respectively from opposite end portions of said seating web, and the outer edges of each ofsaid leg flanges having rebent flange portions, the

rebent flange portion of one leg divergingfrom said. one leg flange, said side frame member including a rabbet extending longitudinally thereof and receiving the rebent flangeportion of said one of said leg flanges of said baflie strip in pressing engagement therewith so as to secure said baflie strip to said side frame member with said seating web disposed against said side frame member, whereby the other of said leg flanges extends away from said side, frame member toward said sash guides with thereto, said sash guides having adjacent side edge portions disposed proximate face-to-face relation, and a unitary baffle strip disposed between said frame member and said sash guides, said baflle strip comprising an elongated, thin strip of spring material having an intermediate seating web, a pair of leg flanges extending in opposite directions respectively from opposite end portions of said seating web, and the outer edges of each of said leg flanges: having rebent flange portions, the rebent flange portion of one leg diverging from said one leg flange, said frame member including a rabbet extending longitudinally thereof and receiving the rebent flange portion of said one of said leg flanges of said baffle strip in pressing engagement therewith so as to secure said baflle strip to said frame member with said seating web disposed against said frame member, whereby the other of said leg flanges extends away from said frame member towards said sash guides with the other end of said other leg flange and the rebent flange portion thereof disposed between and in engagement with said adjacent side portions of said sash guides.

References Cited in the file of this patent UNITED STATES PATENTS- 

